Machine for peessing boxes



(NoModeL) 2 Sheets-Sheet 1-. R. H. HOYT. MACHINE FOR PRESSING BOXES.

No. 372.537. Patented Nov 1, 1887.

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(No Model.) 2 Shets8heet 2. R. H. HOYT.

MAGEINB FOR PRESSING BOXES. No. 372,537. Patented Nov. 1, 1887.

UNITED STATES PATENT OErreE.

RICHARD H. HOYT, OF BUFFALO, NE\V YORK.

MACHINE FOR PRESSING BOXES.

SPECIFICATION forming part of Letters Patent No. 372,537, dated November 1, 1837.

Application filed Septembcrl'l, 1886. Serial No. 213,308. (No model.)

To all whom it may concern.-

Be it known that I, ltioiL-ini) H. HOYT, of the city of Buffalo, in the county of Erie and State of New York, have invented new and useful Improvements in Machines for Pressing Boxes, of which the following is a specification.

This invention relates to an improved ma chine for securing together the side and end boards of wooden boxes which are provided with interlocking tenons or projections.

The object of my invention is to construct an effieient machine whereby the tenons formed at the ends of the boards can be quickly driven into their sockets or seats, so as to form secure and close joints, thereby producing firm and durable boxes in less time and with greater accuracy and convenience than heretofore.

My invention consists of the improvements in the machine, which will be hereinafter described, and pointed out in the claims.

In the accompanying drawings, consisting of two sheets, Figure l is a side elevation of my improved machine. Fig. 2 is a top plan view thereof. Fig. 3 is an enlarged vertical section of one of the clampingjaws and actuating-cylinders. Fig. 4 is a vertical cross-section in line :0 a", Fig. 1, showing the means whereby the movable bed is locked in position. Fig. 5 is a fragmentary horizontal section in line a: a, Fig. 3, showing the valve mechanism of one of the actuating-cylinders. Fig. 6 is a vertical section in line 00 m, Fig. 2. Fig. 7 is a vertical section in line y Fig. 3, on a reduced scale. Fig. Sis a sectional elevation of the mechanism whereby the valves are operated. Fig. 9 is a sectional elevation of the rest.

Like letters of reference refer to like parts in the several figures.

A represents the stationary frame of the machine, which is supported by legs A, and composed of horizontal sidepieees,a, and transverse conneeting'pieces a a".

B B B B represent four upright clamping jaws, which are arranged diagonally opposite each other and adapted to receive the four corners of the box to be formed. The jaw B is preferably made stationary, and serves as a rest against which one corner of the box is placed, while the other three jaws, B B B are made movable and force the box against the stationary jaw B in pressing the tenons into their sockets.

The faces of thejaws are provided with V- shaped reeesses,in which the corners of the box are received.

- Orepresents the movable bed,and C the stationary bed, both of which rest upon thehorzontal pieces a a of the main frame A. The jaws B Bare mounted upon the movable bed O and the jaws B" B upon the stationary bed 0. The bed 0 is made movable upon the side pieces, a a, of the main frame A toward and from the stationary bed 0" by a horizontal adjustingsercw,c, which is supported in bearings in the main frame between the side pieces thereof, and which works in a screw-nut, 0, attached to the underside of the movable bed 0. The screw 0 is turned by means of a detachable wrench or crank, 0

D is a support or standard to which the stationaryjaw Bis attached, and which rests upon one of the outer corner-pieces of the movable bed 0. The latter is provided with a diagonal slot, 01, in which moves a depending lug, d. formed on the under side of the support D.

e is a diagonal adjusting-screw arranged underneath the slot d, and turning in bearings in the bed 0. The screw 0 works in a screw-nut formed in the lug (1, so that by turning the screw the support D and the jaw B are adjusted toward and from the stationary bed 0. Thejaw B is pivoted by a horizontal bolt. f, to a bifurcated head, F, which is provided with a horizontal pin, f, seated in a socket in the upper end of the support D,and forming with the horizontal pinf a universal joint, which permits the clamping-jaw B to adjust itself freely to the corner of the box. The clamp ing-jaw is held in an upright position by means of a light curved spring, f secured to the un derside of the head Fand bearing against the lower portion of the clamping-jaw.

G represents the actuating-cylinder by which the movable clamping-jaw B is operated, and which is mounted upon the opposite cornerpiece of the movable bed 0.

G G represent the two actuating-cylinders by which the clamping-jaws B B are operated, and which are mounted upon the station ary bed 0.

' g g 9 represent diagonal adjusting screws, whereby the cylinders G G G can be moved inwardly or outwardly for adjusting their respeetive clamping-jaws to the size of the box to be formed. it h 71.? represent diagonal slots formed,respectively,in thebeds O Oabove the ad usting-screws g g g. Each of the cylinders G G G" 1s provided with a base-plate, I, which rests upon the bed,and which is provided with a depending lug, i. This lug projects downwardly through the diagonal slot formed in the bed, and is provided with a screw-nut in which-the adjusting-screw of the cylinder engages, so that by turning the screw the cylinder is moved inwardly or outwardly, as may i be required.

'6" represents a clamping-bolt, whereby the cylinder can be secured in position on the bed atter it has been adjusted by means of its adjllStlDgSOIOW. The inner ends of the adjustng-screw g of the cylinder G and of the adustlng screw e of the rest D are geared together by bevel-wheels j, as indicated in dotted lines in Fig. 2, so that by applying a wrench or crank to the outer end of either of these screws both screws will be turned simultaneously, and the jaws B and B will be adusted simultaneously. The adj usting-screws g g" of the cylinders G G are similarly geared together by wheels j, so that the jaws B- B are rendered capableof simultaneous adjust- ,ment.

Each cylinder is provided with a piston, K, and p1ston-rod in, extending through the inner head, 70', of the cylinder, and provided at its inner end with a head, L, which is swiveled on the inner end of the piston-rod by means of a socket formed in the head L, and mounted on a pin or reduced portion, Z, formed at the inner end of the piston-rod. The head L is bifurcated and receives one of the jaws B B B which is attached to the head L by means of a horizontal bolt, 1. This construction renders the jaw seltadjnsting to the corner of the box in a similar manner to thatin' which the stationary jaw B is rendered self-adjusting on its support D. Each head L is provided on its under side with a light spring, m, which supports thejaw in an upright position.

N represents a cross-head secured to'the upor per side of each head L, and connected with the outer flange, a, of the cylinder by means of two side springs, a, which tend to hold the piston K in its normal position at the outer end of the cylinder. The side springs, n, permit of the necessary movement of the head L upon the pin Z to enable the jaw to adjust itself to the corner of the box.

0 O O represent-chambers formed at the dutcr end of the cylinders G G G and P P P represent valve-chambers secured to the outer sides of the chambers O O O".

Q Q Q, represent slide'valv-es arranged in the chambers P P P. Each valve-chamber is connected with the chamber interposed between the valve-chamber and the cylinder by valve-rod s by a rod, t.

a supply-port, p, and exhaust-port p, one of which can be uncovered at a time by the valve.

R represents the stationary supply-pipe, through which the steam, compressed air, water, or other actuating agent is supplied to the valve-chambers P P P", which latter are connected with the stationary supply-pipe by flexible branch pipes r 1" 1, which are made of sufficient length to permit of the requisite adjustment of the cylinders. Each of the valve-chambers is provided with a suitable exhaust-pipe, r which is arranged opposite the exhaust-port 19, while the branch pipes are arranged opposite the inlet-ports p, as indicated in Fig. 5. The valve P is arranged to move parallel with thedimensions of the machine; but the valves P P are arranged to move at right angles to the valve P, as represented in Fig. 2.

s 8 represent the valve-rods, attached, re-

spectively, to the valves P P, and extending inwardly, with their ends overlapping each other, and secured adjustably together by a clamp-bolt, 8 so that the rods can be rigidly connected to move both valves simultaneously in any of the positions in which the cylinders G G G may be adjusted. The valve-rod s is provided with a suitable handle, 5',- for operating the valves.

3 is the valve-rod attached to the valve P, and connected with the valve-rod s by means of an elbow-lever, T, which is pivoted to the upper side of the chamber 0, and connected with the valverod s by a rod, t, and with the The rod 23 is provided with a slotted end, t, to which the rod 8* is adjustably connected by a clamp-bolt, t whereby the connection between the elbowleverT and the valve P can be adjusted as the position of the cylinders G G G may require.

The rod t is provided with a slotted end, t, in which the elbow-lever T is adjustably attached by a clamp-bolt, t By takinghold of the handle s 'the three valves may be operat (1 simultaneously, so as to admit the actuating agent to the three cylinders or exhaust it therefrom simultaneously.

u represents an outlet formed at the inner end of each cylinder for the purpose of permitting the discharge of any steam, water, or other fluid which may escape past the piston.

12 represents clamp-bolts secured to the under side of the movable bed 0 and passing through a bridge-piece, '0', which is pressed against the under side of the side pieces, a, of the main frame by nuts 12, as represented in Fig. 4. By this means the movable bed 0 can be secured in position on the main frame after it has been adjusted.

The operation of the machine is as follows: The cylinders G G G and rest- D are first adjusted by means of the feed-screws,- so as to adjust the clamping jaws to the approximate size of the boxes to be pressed. If the range sired adjustment is effected by means of the movable bed 0. The tenons formed at the ends and sides of the bOX are then loosely interlocked by the operator and the box placed between the elampingjaws with one corner of the box resting against the stationary jaw B. The valves Q Q Q are then moved by the handle 5 in the proper direction to admit the steam or other actuating agent to the eylinders G G G The steam entering the cylin ders moves the pistons forward, thereby forcing the clan'iping-jaws against the corners of the box and tightly pressing the tenons into their seats. \Vhen the box has been sufliciently pressed,the val res of the cylinders are moved in the opposite direction, whereby the steam is shut off from the cylinders and the exhaustports are opened. The pressure having been removed from the pistons,the springs 02, which have been strained by the forward movement of the pistons, now return the pistons to their former retracted position. The finished box is then removed and the operation is repeated.

By the use of my improved machine much time and labor are saved, and the operation of securing the sides and ends of the boxes together is greatly expedited. The disagreeable noise produced by hammering the boxes together,as heretofore practiced, is also avoided.

I claim as my invention- 1. In a pressingmachine, the combination, with a stationary corner-rest, of a movable compressing-jaw adapted to move toward and from the corner rest, two movable cornerpressing jaws adapted to move in opposite directions to each other and at right angles to the firstmentioned jaw, and cylinders and pistons whereby the movable jaws are actuated, substantially as set forth.

2. In a pressing-machine, the combination, with a cylinder. of a piston provided with a red, It, a head, L, attached to said rod, a press ing-jaw pivoted to the head L, a crosshead, N, secured to the head L, and retractingsprings a, connected with said cross'head, substantially as set forth.

3. In a-pressing-machine, the combination, with the supporting-bed,ofa stationary cornerrest attached osaid bed, cylinders movablysupported on said bed, adj Listing-screws, whereby the cylinders are adjusted on the bed, pistons and rods arranged in said cylinders, and pressing -jaws attached to said piston-rods, sub stantially as set forth.

4. In a pressing-machine, the combination, with the supporting-bed, of two cylinders arranged at an angle to each other, adjustingscrews,whereby the cylinders are moved on the bed, and gears, whereby the adjusting screws are connected and operated simultane ously, thereby adjusting the cylinders toward and from each other,substantially as set forth.

5. In a pressing-machine, the combination, with the corner-rest and its adjustingscrew, of a cylinder arranged at an angle to the corner-rest, an adj Listing-screw, whereby the cyl inder is moved on the bed, and gcars,whereby .the adjusting-screws of the rest and cylinder are connected and operated simultaneously, thereby adjusting the cornerrest and cylinder toward and from each other, substantially as set forth.

6. The combination, with the main frame, of the stationary bed 0, provided with movable cylinders G G", and geared adjustingscrews g 1 of the movable bed 0, provided with a movable cylinder, G, and movable rest D, and geared adjusting-screws 0g, substantially as set forth.

7. The combinatiomwith the corner-rest, of the pressure-jaws B B '5 the actuating-cylinders G G Gflprovided withpistons,with which saidjaws are connected, valve-chambers P l P, valvesQ Q Q", applied to said cylinders, and mechanism, substantially as described, whereby said valves are moved simultaneously, substantially as set forth;

8. The combination, with the bed of the pressing-machine, of the corner-rest attached to the bed, the actuating-cylindersG GG, provided with valve chambers P P P and valves QQ Q", the pistons K K K, the pressing jaws B )2 Bflconnected with the pistons, and flexible steam supply pipes connected with the valve chambers, substantially as set forth.

\Vitness my hand this 7th day of Septenr ber, 1886.

RICHARD H. HOYT.

\Vitnesses:

CARL F. GEYER, JNo. J. BONNER. 

